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Distance Between Two Points in 3D Calculator
Find the straight-line distance between two points in three-dimensional space using their x, y, and z coordinates.
What this calculator does
This tool finds the straight-line (Euclidean) distance between two points in 3D space, given their coordinates as (x₁, y₁, z₁) and (x₂, y₂, z₂).
The formula
The 3D distance formula extends the Pythagorean theorem to three dimensions: distance = √((x₂-x₁)² + (y₂-y₁)² + (z₂-z₁)²). Each coordinate difference is squared, the squares are summed, and then the square root of that sum gives the direct distance between the two points.
Note: the result uses whatever units your coordinates are in (meters, feet, or plain grid units) — the calculator does not convert units for you. This tool is for general math and educational purposes.
Last reviewed August 2026